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Resin-covered metal sheet, pattern sheet for resin -covered metal sheet, and process for the production of resin-covered metal sheet

A pattern design and metal plate technology, applied to resin-coated metal plates with excellent durability, and resin-coated fields, can solve problems such as equipment cost and plate damage, and achieve good durability and good heat and humidity resistance.

Inactive Publication Date: 2005-11-02
MITSUBISHI PLASTICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as in the case of transferring the pattern with a take-off roll in extrusion film production, the pattern is restricted, and there is a risk of damage to the plate when the embossing roll comes into contact with the warped portion of the metal plate end, etc. Therefore, it is necessary to prepare a few more preparatory rollers in the warehouse, and the cost of equipment is still a problem

Method used

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  • Resin-covered metal sheet, pattern sheet for resin -covered metal sheet, and process for the production of resin-covered metal sheet
  • Resin-covered metal sheet, pattern sheet for resin -covered metal sheet, and process for the production of resin-covered metal sheet
  • Resin-covered metal sheet, pattern sheet for resin -covered metal sheet, and process for the production of resin-covered metal sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0178] first invention

[0179] In order to describe the first invention more concretely and in detail, examples are shown below, but the first invention is not limited to these examples at all. In addition, the measurement standards and test methods of the physical properties of the resin-coated metal sheets shown in Examples and Comparative Examples are as follows.

[0180] (1) Weight average molecular weight of polyester resin

[0181] Shim-Pack column GPC-800CP manufactured by Shimadzu Corporation was installed on Gel Permeation Chromatograph HLC-8120GPC manufactured by Tosoh Corporation, and hexafluoroisopropanol / Chloroform = 1 / 20 (vol / vol) mixed solvent, with sample solution concentration 0.476wt / vol%, solution injection volume 10μl, mobile phase solvent using chloroform, solvent flow rate 1.2ml / min, solvent temperature 40 ℃ under the measurement , in terms of polystyrene, the weight average molecular weight of the polyester resin was calculated. The weight average m...

Embodiment a1～a7

[0229] Examples a1-a7 and comparative examples a1-a13 (Table 5)

[0230] Comparative Examples a7 to a13 are examples in which a single-layer polyester film colored with a titanium oxide pigment was laminated on a metal plate, but the durability results were all poor.

[0231] Comparative examples a7 to a9 have the weight average molecular weight required for the layer B in claim 3 of the present invention, but many blister-like swellings occurred in the samples after the heat and humidity resistance test. It may be that the increase of permeated moisture in the thickness direction of the thin plate caused by the addition of titanium oxide pigment promotes the corrosion of the metal plate surface, causing partial peeling between the thin plate and the metal plate.

[0232] In Comparative Examples a10 to a13, many cracks were observed in the resin layer, and the adhesive force with the metal plate also seemed to be lowered. In Comparative Examples a7-a9, the film layer maintain...

Embodiment a8、a9 and comparative example a14～a19

[0236] Embodiment a8, a9 and comparative example a14~a19 (table 6)

[0237] Use a composition that does not have the adaptability to the embossing machine as the composition of the B layer, and use printing and coating to give the pattern design. In Comparative Example a15, the resin composition is the same as that of the B layer of Example a6, but due to the addition of titanium oxide pigments The weight average molecular weight after extrusion film making is lower than that of Example a6. As a result, cracks occurred after the heat-and-moisture resistance test due to deterioration of the resin layer itself. Also about Comparative Example a14 in which a carbodiimide-based anti-hydrolysis agent was added, the addition amount was small, and the effect could not be obtained.

[0238] Comparative examples a16 to a19 are cases in which a titanium oxide pigment exceeding the range of the present invention is added to the B layer, and the effect of making the thin plate into a two-...

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Abstract

A resin-covered metal sheet excellent in durability (resistance to moist heat) which is obtained by laminating a metal sheet with a laminated sheet consisting of at least two unstretched layers (layers A and B) made mainly of a polyester resin via an adhesive with the layer B side employed as the adhesive surface, wherein the laminated sheet has a total thickness of 65 to 300mum and a pigment for coloring and hiding is incorporated mainly into the layer A, with the layers A and B having thicknesses of 50 to 250mum and 15 to 80mum respectively and with the amount of the pigment component contained in the layer B being limited to at most 10 parts by weight per 100 parts by weight of the resin component. Further, resin-covered metal sheets having good embossed appearance can be provided by the use of a current embossing machine used in embossing flexible PVC sheets.

Description

technical field [0001] The present invention relates to the outer packaging of home appliances such as AV equipment and air conditioner covers, plywood furniture, steel furniture, elevator interior decoration, and window materials, unit bathroom (unit bath) wall materials, unit bathroom ceiling materials, partitions and other buildings A method for producing a resin-coated metal sheet excellent in durability for interior materials, a design sheet for the resin-coated metal sheet, and a resin-coated metal sheet. Further, it relates to a resin coating that does not use a halogen-containing resin and is suitable for applications such as unit bathrooms, which are excellent in scratch resistance and processability, and are excellent in durability in hot and humid environments, and suitable for coating applications with embossed pattern designs such as partitions Metal plate, design sheet for resin-coated metal plate, and manufacturing method of resin-coated metal plate. Backgroun...

Claims

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Application Information

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IPC IPC(8): B32B1/00
Inventor 蛯谷俊昭
Owner MITSUBISHI PLASTICS INC
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